Answer:
D
Step-by-step explanation:
i just took a test with that question
Let f(b) = <span>3b^2+13b+4/b+4
</span>the domain of f is D = {b/ b+4#0} so b# - 4
so the undefined value of is when b = -4
Answer:
17.5 m
Step-by-step explanation:
The height of a parabola above its vertex is proportional to the square of the distance from the vertex.
<h3>Cable height</h3>
The towers are 1200 m apart, so each is 600 m from center. The location of interest is 300 m from center, so 1/2 the distance to a tower. Since the height is proportional to the square of the distance, the height half-way to the tower will be (1/2)² = 1/4 the height of the tower.
(1/2)²×(70 m) = 17.5 m
The height of the cable 300 m from center will be 17.5 meters.
The explanation is in the picture
Answer:
4266
Step-by-step explanation:
Okay! let's start with finding what 3% of 5400 birds is
3% is .03 as a decimal. We can find 3% of 5400 by multiplying 5400 by .03
5400×.03= 162
If our rainforest is losing 3% a year, that means we are losing 162 birds a year.
Let's turn it into an equation! x will be the number of years
5400-162x= number of birds left after x years
Now put 7 in for x
5400-(162×7)= 4266 birds
Hope this helps!
AbbyMay :)